Can these lens blanks be ground for prescription strength?
30009
No, they can only be cut and fitted to frames. Your best bet might be to buy the Oxy-Iso Vein-Finder Glasses. They are adjustable and goggle-like so they can be worn on top of your regular glasses.
30010
We at O2Amp do now have prescription-grade blanks. See o2amp dot com . -O2Amp
77652
Yes, somebody here said +.2 or something like that.It is minor but present; makes screen seem just a little bit bigger.You can get them as prescription lenses if you need more.
1329377
If there is metal around it. The lenses stay put via a small magnet and they need something to attach to.
2120560
I don't think. Once you tighten them on your lens and clip the left overs, it is not possible to remove it without damaging. But a strap for each lens.
1907550
I wouldn't recommended it. It would melt the lens slowly. They are pretty bright already
1111783
I normally use these tubes with the 14-45 and 20mm lenses. That being said, the tubes appear sturdy enough for use with the 14-140 as long as you're careful not to put too much torque on the combination. Optically you should be fine.
902559
I had selected the lenses for each eye separately. So as long as they have lenses available for your prescription, you can mix and match.In fact this my prime reason for investigating this offering.
732554
they are made to be placed on the outside of the light lens.clean lens well & adhesive will do a great job.
1844049
It should be fine if you blacken the whole lense the foam blocks light for sure.
350251
One more thing, unless you have excellent light collection, I'd be careful. Both of these lenses absorb some light, and at maximum magnification the image may be too dark.
1264606
probably not. You need an EF lens, not an EF-S lens. Check out your labels.
265857
Yes, you could actually. The stock lenses are not permanently glued or attached to the frame.They can be removed, and therefore put prescription lenses in them. I would as a matter of fact recommend doing this because the stock lenses are in fact somewhat blurred, this however outbeats the purpose of the glasses. So, yes. Than you and good luck :)
1739049
It depends on the lens. Chances are that you're good to go if you're willing make the base more steady by spreading the legs. It really depends on how close together you need to keep the legs and how long/heavy the lens is.
1034033
Yes Romeld you can. I use glasses as well and have my prescription on these.
1279247
I have never tried stacking them except for with my normal UV lens, however I have been told they wouldn't affect the sharpness. I used this along with 3 speedlites to "over power" the sun when the sun was directly overhead. I didn't feel like I needed to stack them ...not sure if I helped you at all or not, sorry! But, it is well worth the money!
1903799
The lenses are very easy to change, however there is a trick to it. It will take a little practice. They will not fit over prescription lenses however.
1664717
Probably not. The lenses come with a shell case that has the threaded opening to which you attach the lenses.